We're Still Not Over Taylor Swift's Birthday Party Guest List

So if you thought Taylor Swift's birthday photobooth post was everything, you're wrong. That was just a preview of her 25th birthday crew. And because we're kind of bummed our invite got lost in the mail, we spent some time looking at photos from the awesome-looking party. Thank goodness for Instagram, right?
Selena Gomez was right by her side as she blew the candles on her cake.
Selena (with Jaime King's hubby Kyle Newman) rocking those reindeer sunnies.
Nick Jonas and girlfriend Olivia Culpo ham it up for the cam with the birthday girl.
Sam Smith, John Legend's wife Chrissy Teigen, and wait, is that Ansel Elgort in the back?
Yup, we're pretty sure that's him.
Another one posted by Taylor's ultimate BFF Abigail. Yup, that's totally Ansel.
Can you tell who our favorite guest was? Clue: check out that adorable cutie in the penguin sweater and Santa hat.
Charli XCX and Kelly Osbourne also joined in on the fun.
Jack Antonoff (who was probably there with Lena Dunham) and Tavi Gevinson? Taylor, who aren't you friends with?
Also spotted at the party were the boys of 5 Seconds of Summer. Now, don't you wish you got an invite, too?